A shift in the government's structure. ex: whenever a new president is elected. non-ex: changing seats on the judicial branch
Because the mandate of heaven chose the leaders and kings or the zhou dynasty lost the mandate of heaven because there were too many natural disasters and rebellions which didnt give the people the right to rule
The answer is c which is gibbons vs Ogden.
D. The pilgrims stayed in an abandoned village whose original inhabitants had died of disease.